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No. 6|8,562. Patenfed Jan. 3|, I899. F. P. DONAHEY.

VENTILATING APPARATUS.

(Applicltion filed Aug. 10, 1898.)

2 Sheets-Sheet I.

=.No Model.)

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No. 6l8,562.

Patented Jan. 3|, I899. F. P. UONAHEY.

VENTILATING APPARATUS.

(Application filed Aug. 10, 189B.\

2 Sheets-5heet 2.

(No Model.)

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NITED STATES PATENT FFrcE.

FRANK P. DONAHEY, OF \VASHINGTON, DISTRICT OF COLUMBIA.

VENTlLATlNG APPARATUS.

SPECIFICATION forming part of Letters Patent No. 618,562, dated January 31, 1899.

Application filed August 10, 1898- To (oZZ whom it may concern:

Be it known that I, FRANK P. DONAHEY, a citizen of the United States, residing at \Vashington, in the District of Columbia, have invented certain new and useful Improvements in Ventilating Apparatus; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to certain new and useful improvements in devices for operating transoms and other ventilating devices, the object being to provide a simple yet reliable and efficient mechanism automatically actuated bythe change in temperature. The transom operating mechanism embodies a motor, either electric, hydraulic, or any other suitable variety controlled. by an electric arrangement, which in turn is governed by a suitable apparatus actuated by the change in temperature. A rise or fall of the temperature will cause a movement of an arm under the control of such apparatus, which will complete an electric circuit and set the motor in motion; but this is only momentary, and as soon as the motor has been started the apparatus is set for further action by a rise or fall of the temperature, and after the transom, window, or other object has been opened or closed, as the case may be, the arm or part controlling the movement of the motor is brought part to its normal position and there awaits a further actuation through the medium of the said parts. The device may be set so as to be operated by any predetermined change in the temperature,and then it requires no attention, being automatic in its action not only in opening and closing the transom, but in resetting itself for another actuation.

. Other objects and advantages of the invention will hereinafter appear, and the novel features thereof will be specifically defined by the appended claims.

The invention is clearly illustrated in the accompanying drawings, which, with the letters and numerals of reference marked thereon, form a part of this specification,and in which- Figure 1 is a diagrammatic view with a portion of the operating-cord broken away, showin g the parts constituting my invention. Fig.

2 is an enlarged detail, partly in section and Serial No. 688,303. (No model.)

motor may be of any of the well-known forms,

a detailed description thereof is not necessary. It is deemed sufficient to merely state that the water-wheel D is mounted to be revolved in either direction, according to the admission of the fluid upon one side or the other, as will more fully hereinafter appear.

The shaft E of the motor is extended at one end beyond the casing and has fast thereon the pinion F, which meshes with the gear G, mounted on a stub-shaft g in the arm or bracket G, secured to the casing of the m0- tor, as seen best in Fig. 1, and also fast on this shaft is the grooved pulley H, around which passes the cord or chain I, which is fast to the pulley, as indicated by dotted lines in Fig. 1, and which is designed to be connected in any suitable manner with the transom, window, or other movable object which it is designed to operate. The transom is not herein shown, as it forms no part of the in vention and as its presence in the drawings is not necessary to a proper understanding of the parts constituting the invention.

J is a large gear-Wheel mounted on a stubshaftj, supported from the casing A, and this gear meshes with the gear F, as shown in Fig. 1, for a purpose which will hereinafter appear. On the rear face of this gear J is a pin or stud J, the object of .which will soon appear. I

As seen best in Fig. 2, the communication between the lower end of the inlet-pipe B and the casing of the motor is controlled by the two valves 1 and 2, carried by the arms 3 and 4, respectively. From an inspection of Fig. 2 it will be seen that the passage of the fluid from the inlet-pipe B may be either to the right or to the left, according to which one of these valves is operated. As illustrated most clearly in Fig. 3, a spring 5 is provided, with one end bearing against a pin or stud 6 on the arm and the other end suitably a-ffiXed, so that when the arm is released by the armature, by which it is normally held, the spring will force it in the direction of the arrow to open the valve.

The upper end of each arm is free, but is normally held against movement by its engagement with an armature 7 or 8, one for each arm, as seen best in Figs. 1 and 2. Each armature is pivoted, as at 9, and is normally held down in the position in which they are seen in Figs. 1 and 2 by their own weight. They are designed to be raised, so as to disengage the end of the arm from the shoulder or notch 10 thereof, by the magnets 11 11 one for each armature, as seen in Fig. 1. The armatures are limited in their downward movement by means of a stop K (seen best in Fig. 2) and which serves for both armatures.

The magnet 11 on the right in Fig. 1 is connected by wire 12 with the magnet 13, which in turn is connected to the post or contact 14 by the wire 15. The said magnet 11 is also connected by wire 16 with the battery L of any suitable style. 13 is a support for the magnets 13 and M. The branch wire 17, which connects the wire 16 in Fig. 1 with the battery, is also connected with the wire 18, which is connected to the other magnet 11, as seen in Fig. 1. This magnet 11 the one on the left in Fig. 1, is connected by the wire 19 with the magnet M, which is connected by wire 20 with the post or contact 21, as seen clearly in said Fig. 1.

22 is a wire leading from one pole of the battery to the post 23, on which is mounted the spring-contact 24. 25 is a similar post, provided with a spring-contact 26, the post being connected by wire 27 with the wire 22, that leads to the battery L, as shown.

N is an arm pivotallymounted between its ends, as at n, and serving for cooperation with the magnets 13 and M and the spring-contacts, as will soon be made apparent. The outer edge of this arm is formed with the central depression forming the shoulders or projections 0, between which the end of the arm P is located, as seen in Fig. 1. The outer ends of this arm N are designed to contact with the contact-springs 21 and 24 as the same arm is moved on its pivot. The arm P is pivotally connected, as at p, with the heel q of the pointer or finger Q, which is mounted to swing on the pivot R and its free end arranged to move over the dial S to indicate the position of the parts and the degree of movement.

Pivotally connected with the arm P, as at t, is the pendent arm or rod T,which carries the float or piston U, which is mounted to move in the cylinderV of a thermostat,whereby the change in the temperature causes the piston to move up or down, as the case may be. This cylinder is adj ustably mounted upon a suitable support, (indicated by dotted lines in Fig. 1,) to which support the magnets 13 and M, the arm N, the graduated arc, the arm P, and the pointer are also attached. Adj ustment of the cylinder permits of the setting of the device so as to operate at a predetermined variation in the temperature.

Any style of thermostat may be employed, the action being substantially the same. In Fig. 4 I have shown another form well known in the art and which will serve equally as well as the form shown in Fig. 1.

4 are stops attached to the motor-casing, with which the arms 3 and 4 contact to limit the movement thereof.

With the parts constructed and arranged substantially as above set forth the operation will be readily understood from the foregoing description, especially when taken in connection with the annexed drawings. Briefly stated, it is as follows: Supposing the transom to be open or partly open, should the temperature fall, so that it would be desirable to have the transom closed, the piston or float U will fall, and thus the arm P will be drawn downward, and in its descent its free end will strike against the projection or shoulder O and move the end of the arm N against the spring 24 and bring it in contact with the post 14, and thus complete the circuit, which energizes the magnets 13 and 11 to the right of Fig. 1 and attracting the armature 7, so that it will be disengaged from the end of the arm 4, and as soon as this arm is released the spring 5 will throw the same downward in the direction of the arrow in Fig. 2, thus moving the valve, so that the water will be allowed to pass into the casing and, acting upon the water-wheel, cause the same to be revolved, and in its revolution it revolves the gear F, which in turn imparts motion to the gear G and pulley H, and thus the transom is operated through the medium of its cord I. The gear J in the meantime is revolved by reason of its being geared into the gear F, as will be readily understood, and as the said gear J revolves its pin or projection J is brought into contact with the arm 4 and returns it to its normal position, where it is engaged by the notch formed in the armature 7, and the flow of water is cut off. The armature 7 will at this time be in its normal position, as the completion of the circuit is but momentary, for the reason that as the end of the arm N engages the spring-contact it first moves it into engagement with the post 14, so as to complete the circuit sufficiently to energize the magnet 11 and cause it to attract its armature, but then it rides over the end of the spring, which flies back to its normal position and breaks the circuit, when the armature 7 falls to its former position. A rise in the temperature moves the arm P in the opposite direction and energizes the other set of magnets, and thus the other armature is attracted and the opposite valve IIO actuated to allow the water to flow in the opposite side and move the water-wheel in the opposite direction.

Modifications in detail may be resorted to without departing from the spirit of the invention or sacrificing any of its advantages. For instance, in lieu of a water-motor I may sometimes employ an electric motor, and in Fig. 3 I have shown the arm 4 as adapted for cooperation with such a form of motor. For this purpose the arm is provided with a contact W beyond its pivot 10, and this contact is designed to be thrown between the two spring-contacts X and X, so as to complete the circuit and start the motor in a manner which will be readily understood.

Other minor changes I should consider as being within the scope of'my invention, and I therefore do not wish to be understood as restricting myself to the precise construction herein shown and described.

Having thus described my invention, what Iclaim as new, and desire to secure by Letters Patent, is

1. The combination of a motor, transomoperating means controlled thereby, a movable part controlling said motor, electrical devices embodying a pivoted armature with projections and spring-contacts in the path of the ends of said armature for controlling said part and constructed and arranged to be actuated by a change in the temperature and a magnet in circuit with said electrical devices adapted to control the motor-controlling part, substantially as described.

2. The combination of a motor, transomoperating means controlled thereby, a movable part controlling said motor, electrical devices embodying a pivoted armature with projections and spring-contacts in the path of the ends of said armature for controlling said part and constructed and arranged to be actuated by a change in the temperature, a magnet in circuit with said electrical devices adapted to control the motor-controlling part, and a resetting device controlled by said motor, as set forth.

3. The combination of an electrical device embodying a pivoted armature and springcontacts for cooperation therewith, a thermostat connected with and adapted -to move said armature on its pivot, a transom-operating mechanism, and an interposed magnet in circuit with said electrical device and adapted to control the transom-operating mechanism, substantially as and for the purpose specified.

4. The combination of a motor, a transomoperating mechanism, a magnet and armature adapted to control the motor, a gear operatively connected with the motor and adapted to reset the armature controlling the motor, a second magnet having a pivoted armature, in circuit with the first-named magnet, said pivoted armature being thermostatically and magnetically actuated to momentarily close the circuit including the two magnets.

5. The combination with the motor and the arm for controlling the same, of a rotary valve carried by said arm, a spring acting upon said arm, and a gear provided with a projection to engage said arm to move it in opposition to its spring, as set forth.

6. The combination of a motor, the valvecarrying arm for controlling the same, the armature for holding the said arm, the transom -operating devices, the resettinggear with projection, the magnet in circuit with the magnet of the first-mentioned armature, its armature, the spring-contacts disposed to be engaged by the said armature, and the pivoted arm connected with a thermostat for moving said arm, all substantially as shown and described.

7. The combination of a motor, a valve-carrying arm for controlling the same, an armature for engagement with said arm, a spring.

acting on said arm, transom-operating devices actuated by the motor, a resetting-gear actuated by the motor, a motor-controlling magnet and a circuit-closer embodying a pivoted armature and spring-contacts in the path of the ends thereof in circuit with said motorcontrollingmagnet,substantially as specified.

S. The combination of a motor and a magnet forcontrolling the same, with a pointer, an arm pivotally connected therewith beyond its pivot, said pointer and arm disposed at substantially right angles to each other, a thermostat adapted to move the arm, a second magnet provided with a pivoted armature having projections in the path of said arm and spring-contacts in the path of the ends of the armature whereby when said armature is moved a circuit is made through the two-magnets, substantially as described.

9. In a device of the character described, the combination with a pair of magnets, .of a pivoted armature pivoted between said magnets and having projections or shoulders, spring-contacts mounted in position to have their free ends engaged by the ends of the arm, a pivoted arm at right angles thereto and adapted to engage the projections or shoulders to move the armature, and a mag= net in circuit with said magnets for controlling the transom-operating devices, substan= tially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

FRANK P. DONAHEY.

Witnesses:

ULYSSES G. ANDERSON, GEo. M. HOWARD. 

